SBAS246B December   2001  – November 2014 DAC8532

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Diagram
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 DAC Section
      2. 8.3.2 Resistor String
      3. 8.3.3 Output Amplifier
      4. 8.3.4 Serial Interface
      5. 8.3.5 Power-On Reset
    4. 8.4 Device Functional Modes
      1. 8.4.1 Input Shift Register
      2. 8.4.2 SYNC Interrupt
      3. 8.4.3 Power-Down Modes
    5. 8.5 Register Maps
      1. 8.5.1 Operation Examples
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Current Consumption
      2. 9.1.2 Driving Resistive and Capacitive Loads
      3. 9.1.3 Crosstalk and AC Performance
      4. 9.1.4 Output Voltage Stability
      5. 9.1.5 Settling Time and Output Glitch Performance
      6. 9.1.6 Microprocessor Interfacing
        1. 9.1.6.1 DAC8532 to 8051 Interface
        2. 9.1.6.2 DAC8532 to Microwire Interface
        3. 9.1.6.3 DAC8532 to 68HC11 Interface
      7. 9.1.7 DAC8532 to TMS320 DSP Interface
      8. 9.1.8 Bipolar Operation Using the DAC8532
    2. 9.2 Typical Application
      1. 9.2.1 Using REF5050 as a Power Supply for DAC8532
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DGK|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 16-Bit Monotonic Over Temperature
  • MicroPower Operation: 500 µA at 5 V
  • Power-On Reset to Zero-Scale
  • Power Supply: 2.7 V to 5.5 V
  • Settling Time: 10 µs to ±0.003% FSR
  • Ultra-Low AC Crosstalk: –100 dB Typ
  • Low-Power Serial Interface With
    Schmitt-Triggered Inputs
  • On-Chip Output Buffer Amplifier With Rail-to-Rail Operation
  • Double-Buffered Input Architecture
  • Simultaneous or Sequential Output Update
    and Powerdown
  • Available in a Tiny VSSOP-8 Package

2 Applications

  • Portable Instrumentation
  • Closed-Loop Servo Control
  • Process Control
  • Data Acquisition Systems
  • Programmable Attenuation
  • PC Peripherals

3 Description

The DAC8532 is a dual channel, 16-bit digital-to-analog converter (DAC) offering low power operation and a flexible serial host interface. Each on-chip precision output amplifier allows rail-to-rail output swing to be achieved over the supply range of 2.7 V to 5.5 V. The device supports a standard 3-wire serial interface capable of operating with input data clock frequencies up to 30 MHz for VDD = 5 V.

The DAC8532 requires an external reference voltage to set the output range of each DAC channel. The device incorporates a power-on reset circuit which ensures that the DAC outputs power up at zero-scale and remain there until a valid write takes place. The DAC8532 provides a flexible power-down feature, accessible over the serial interface, that reduces the current consumption of the device to 200 nA at 5 V.

The low-power consumption of the device in normal operation makes it ideally suited to portable battery-operated equipment and other low-power applications. The  power  consumption  is 2.5 mW at  5 V, reducing to 1 µW in power-down mode.

The DAC8532 is available in a VSSOP-8 package with a specified operating temperature range of –40°C to 105°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DAC8532 VSSOP (8) 3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Simplified Diagram

functional_block_diag_SBAS246.gif